Electric wire casing



Dec. 9, 1930. M BERRY 1,784,217

lEIJECTELT'J 'HIRE CASNG Filed Dec. 31, 1923 gnocwtoz 'James v50/)yfPatented ii 9, E93@ PATENT OFFICE JAMES M. BERRY, OF DETROIT, MICHIGANELECTRIC WIRE CASING Application led December 31, 1923. Serial No.683,667.

The invention relates to electric wiring structures and has for one ofits objects the provision of a casing for an electric wlre which may bereadily applied and safely handled and which can be manufactured atrelativelylow cost. Another object is the provision of a pliable casingenclosing a pliable electric wire and forming a unit therewith. Furtherobjects of the invention reside in the novel features of constructionand combinations and arrangements of parts as more fully hereinafter setforth.

In the drawings Figure 1 is a plan view of a portion of .an l5 electricwiring structure embodying my 1nvention; `Figure 2 is a transversesection" therethrough;

j Figure 3 is a plan view of a portion of the casing blank before theforming operations have been completed;

Figure 4i is a yplan view of a modified construction;

Figure 5 is a transverse section therethrough; A

Figure 6 is a plan View of another modified construction 1 is a pliablestrip formed of metal and having at its sides the beads 2 containing thepliable insulated electric wires 3. To provide for the pliability of thestrip the beads 2 each comprise the series of return-bent tongues 4which are formed by transversely slitting the edges of the blank andthen turn- .1 ing over the portions or tongues between the slits. Thewidths of the tongues are such that the complete strip may be readilycurved or bent to the desired form. The ortion of the strip intermediatethe beads 2 1s preferably formed with the longitudinallyextending'series of holes 5 through which suitable securing means, suchas screws or nails, may be passed for fastening the strip to the wall,ceiling or other. desired support.

This unit including the metallic'strip and the electric wires may bemanufactured at a relatively low cost owing to the fact that it4 may beformed in an automatic machine which will transversely slit the edges ofthe strip and punch the longitudinally extending .is not pliablelongitudinally thereof.

series of holes therein as well as return-bend the tongues around theelectric wires, the unit upon leaving the machine being complete andready for use. Furthermore, this unit being pliable may be ofindeterminate length and wound upon reels.

In the modified construction shown in Figures 4 and 5, the strip 6,which is preferably formed of metal, is provided with the beads 7 at itsedges and the bead 8 extending Aim longitudinally thereof and near itsmiddle, these beads being integral with the flat portions 9 of the stripintermediate the beads and being adapted to receive electric wires 10.The flat portions of the strip are provided with thelongitudinallyextending series of holes 11 through which the securing means mayextend. This construction may also be formed in an automatic machine but7 It is apparent that the number of beads of either casing may bereadily changed to take care ofthe desired number of electric wires.

As shown in the modified construction in Figure 6, posite edgestransversely slit at13 to form tongues 14. These transverse slits arestaggered and as a consequence when the tongues are return bent intooverlapping relation the outer tongues extend over the slits formedbetween thel inner tongues. 15 is a pair of insulated electric wireswhich are enclosed Within the overlapping return-bent tongues, thearrangement being such that the casing forms a unit with the wires andbeing pliable may be wound upon reels. It will be seen that this unitmay be made in an auto` matic machine and may be of indeterminatelength.

From the above description it will be seen that I have provided a simpleform of casing for an electric wire which may be manufactured atrelatively low cost and can'be easily secured to a support. Furthermore,the casing is adapted to be used as a lath 'and may be plastered over.It will also be seen that the casing and electric wire may form a unitwhereby both may be secured to the support with the one operation. Alsothat the unit may be curved or twisted to pass 1 12 is a metallic striphaving its op- 75 around obstructions or be secured to support membersextending at an angle to each other.

What I claim as my invention is 1. In an electric Wire structure, acasing for pliable electric wires, said casing including a strip ofmaterial of a readily pliable character and having its oppositelongitudinally extending edges transversely slit nto form longitudinallyextending series of tongues for increasing the flexible or pliablecharacter of the casing, each series of tongues adapted to bereturn-bent to completely enclose an electric Wire. Y

2. In an electric wiring structure, a pliable strip having asubstantially flat body 'portion provided along a longitudinal edgethereof With a tubular bead constituting a casing vfor receiving andcompletely enclosing an electric Wire, said bead being transversely slitat a plurality of spaced points for increasing the flexibility thereof.

3. In an electric Wiring structure, a pliable strip havin asubstantially flat body portion provi ed along a longitudinal edgethereof with a tubular bead for receiving an electric wire, said beadbeing formed of a series of substantially parallel transverselyextending return bent tongues for imparting iexibility to said bead.

v 4. In an electric wiring structure, a pliable strip having a securingportion provided Valong a longitudinal edge thereof with a tubular beadfor receiving an electric wire, said bead being formed of a series ofsubstantially parallel transversely extending return-bent tongues forimparting flexibility to said bead. 4

5. In an electric Wiring structure, a pliable strip having a securingportion provided With a tubular bead for receiving an electric Wire,said bead being adapted to entirely enclose the Wire and being formed ofa series of substantiallyl parallel transversely extending return-benttongues for imparting flexibility to said bead.

In testimony whereof I affix m signature.

` JAMES M. ERRY.

